Trying to pass in a boolean C# variable to a javascript variable and set it to true

Question

Having issues where in my .aspx page I pass in a boolean variable (C#) to a javascript function that is expecting a boolean type.

BUt the C# variable returns True, and javascript doesn't like the uppercase.

myjavascript( <%= MyBooleanVariableInCSharp %> );

If I convert the c# variable to string, then my javascript variable becomes a string and not a js bool value!

what is the solution to this nightmare? lol

Answer 1

试试这个：

myjavascript( <%= MyBooleanVariableInCSharp.ToString().ToLower() %> );

Answer 2

if you need to do this often, just add this to the top of the javascript (or your js library file, etc.)

var True = true, False = false;

Then you code

myjavascript( <%= MyBooleanVariableInCSharp %> );

Would work just fine.

Another option if for whatever reason you don't want to use the variables is to write your javascript call like this:

myjavascript( '<%= MyBooleanVariableInCSharp %>'=='True' );

Answer 3

你也可以这样做。

myjavascript(<%=myBooleanVariableInCSharp ? "true" : "false" %>);

Answer 4

The other answers are targeting the old version, before Razor
if you are using Razor then this is the solution

myjavascript( @MyBooleanVariableInCSharp.ToString().ToLower() );

Answer 5

C# has a built-in method for it. At least in .NET v4 and newer.

var myBoolean = <%= myBooleanFromCodeBehind.ToJs() %>;